A. Manganin
B. Porcelain
C. Carbon
D. Copper
Basic Electrical Mcqs
A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is___________?
A. 400 Q
B. 600 Q
C. 800 Q
D. 1000 Q
The minimum charge on an ion is______________?
A. equal to the atomic number of the atom
B. equal to the charge of an electron
C. equal to the charge of the number of electrons in an atom (#) zero
Varistors are______________?
A. insulators
B. non-linear resistors
C. carbon resistors
D. resistors with zero temperature coefficient
Whether circuit may be AC. or D. C. one, following is most effective in reducing the magnitude of the current?
A. Reactor
B. Capacitor
C. Inductor
D. Resistor
Bulbs in street lighting are all connected in_____________?
A. parallel
B. series
C. series-parallel
D. end-to-end
Which of the following are the passive elements?
A. Resistor
B. Bulb
C. Both
D. None of these.
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In a lamp load when more than one lamp are switched on the total resistance of the load_____________?
A. increases
B. decreases
C. remains same
D. none of the above
Temperature co-efficient of resistance is expressed in terms of___________?
A. ohms/°C
B. mhos/ohm°C
C. ohms/ohm°C
D. mhos/°C
Internal resistance of ideal voltage source is ?
A. zero
B. infinite
C. finite
D. 100 ohms
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